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Pinworm Medicine

Generic Name: pyrantel (pie RAN tell)
Brand Name: Antiminth, Ascarel, Pin-X, Pinworm Caplets, Pinworm Medicine

Medically reviewed on December 15, 2017.

What is Pinworm Medicine?

Pinworm Medicine is an "antihelmintic," or anti-worm, medication. It prevents worms from growing or multiplying in your body.

Pinworm Medicine is used to treat infections caused by worms such as pinworm and roundworm.

Pinworm Medicine may also be used for purposes other than those listed in this medication guide.

Important Information

Take the whole dose of Pinworm Medicine. It can be taken with food or on an empty stomach at any time during the day.

Follow your doctor's instructions or the instructions that accompany the package about treatment; about washing of clothes, linens, and towels; and about household disinfecting. Pinworm infections are easily spread from one person to another.

Who should not take Pinworm Medicine?

Before taking Pinworm Medicine, talk to your doctor about any other medical conditions that you have. This medicine should not be used if you have liver disease or if you have had an allergic reaction to this medicine in the past.

Do not take Pinworm Medicine without first talking to your doctor if you are pregnant.

Do not take Pinworm Medicine without first talking to your doctor if you are breast-feeding a baby.

Children younger than 2 years of age should not use Pinworm Medicine unless otherwise directed by your doctor.

How should I take Pinworm Medicine?

Take Pinworm Medicine exactly as directed by your doctor or as directed in the package labeling. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass of water.

Pinworm Medicine may be taken with or without food at any time of the day.

Shake the suspension well before measuring a dose.

Use a dose-measuring spoon, cup, or dropper (not a regular tablespoon) to ensure that you measure the correct dose of medication. Ask your pharmacist where you can get a dose-measuring device if you do not have one.

Fasting, laxatives, and purging will not help cure this infection.

Treatment of family members and other close contacts may be necessary. Pinworm is spread very easily to others in close contact with the infected person.

Toilets must be disinfected daily and clothing, linens, towels, and pajamas must be changed and washed daily.

Store Pinworm Medicine at room temperature away from moisture and heat.

What happens if I miss a dose?

Since Pinworm Medicine is usually taken in one dose, you are not likely to miss a dose.

What happens if I overdose?

Seek emergency medical attention.

What should I avoid while taking Pinworm Medicine?

Treatment of family members and other close contacts may be necessary. Pinworm is spread very easily to others in close contact with the infected person.

To prevent reinfection, toilets must be disinfected daily, and clothing, linens, towels, and pajamas must be changed and washed daily.

Use caution when driving, operating machinery, or performing other hazardous activities. Pinworm Medicine may cause dizziness. If you experience dizziness, avoid these activities.

Pinworm Medicine side effects

Seek emergency medical attention if you experience an allergic reaction (swelling of your lips, tongue, or face; shortness of breath; closing of your throat; or hives).

Other, less serious side effects may be more likely to occur. Continue to take Pinworm Medicine and talk to your doctor if you experience

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

See also: Side effects (in more detail)

What other drugs will affect Pinworm Medicine?

Do not take other anti-worm medicines at the same time as Pinworm Medicine unless otherwise directed by your doctor. Other drugs used to treat infections caused by worms may decrease the effectiveness of this medicine.

Theophylline (Theo-Dur, Theolair, Theochron, Theo-Bid, Elixophylline, others) may have dangerous side effects when taken during therapy with Pinworm Medicine. Your doctor may want to monitor your theophylline blood levels.

Drugs other than those listed here may also interact with Pinworm Medicine. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

Further information

  • Your pharmacist has more information about Pinworm Medicine written for health professionals that you may read.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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